Coal-drill-socket-retaining apparatus.



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EL ...n.x. Lemie.;

Application lerl Becem'ber 'L le.

To all "whom t may convene;

lle it known tlmt l, JACOB il. Menena o,

citizen of the United Eitetes, residing et Mul" bei-ry, in the county ofCiowtoid sind State of lnnens7 have invented eei'tnin new .and useflnllinpioveinents in Coel--lilrill-tioeltet Retaining n jopaietns, ofivliioli i following is o. lull9 eleoi,l and emot description, suoli eswill enable otneis skilled in tlie znft to which it eppeitains to molteand use the seme.

The invention relates; to feminin?" device foiloeling the drill socketot eea-l diills to the three-d loer of the diilling, machine so that thesocket is securely held in operative position on the thread bei when inoperation and een be easily end quiolily feino-ved when desired.

The drill socket is irequently iemoved :ioin tlie tlueed bnr andreplaced tlieieon oi the pnpose of changing dille, grind ing tlie diilleand other reasons end is essentie on easily and quickly ette-o able anddetachable ineens be pirovided so that no time Will be lost in changingthe drills, it being of ,still uitlief: advantage to be able to attachoi" detach, the With,- out tlie oid of otliei tools, enen ee punches,Wren-elles and the like it is not eonveni ient of expeditious foi' theWorkmen to 'al ways iave suoli tools piesent when the diill is to bechanged,

Tliefpfesent invention seelis to povide en improved etninei foi'detuehzilily etto-,oliine' diill soclzete` to the thread bei" eooldrillingv niecliinee so tlnii; eooliet een lie instantly attached to ondetached fiom the tht-end bei without die uid of other;Y tools,

Vlitli these and other objects infvievv the invention consists in tliefeotuiee 0f Con.- etueton, combinations and :infong'etnents oi portslieeinatter set ortli and nioie fully pointed out in the appendedelnirfn, the no eompenying drmvings illustrating en epplicetion of theinvention to the drill socket and thread loniof n, cool drillingmachine.

ln the dmvvingmm Figure l is a View in elevation of e Coal drill socketwith the' improved retainer shown in dotted lines :ind fizignientni'yviews of the thread bei and n. Coal drill. 4

llig: 2 is n View in elevation of the socket und fiegmentaiy-views ofthe coal drill and thread bar.

Specification of Letters Patent,

w lue/n.40

Fig. eeetionol view tellen on line QJ o Fig. "Jieiitey View in elevationof the rlhe tl* eed 5 is of eoinmonnnd Well known consti-ue on in thenrt pertaining' to Coal drilling les, excepting the slot 6 in which thenel* 'Y is mounted on the pin 8.

The coul drill 9 and the soelet l@ me olf common :ind well knownconstruction, en` eepting that th reetnngnloi liole ll is su positionedand wronged as 'to oopei'otw with the 7 in retaining the soelet l0 ontlie tliic'end bei' 5. v

'lhe slot li 'e provided in tile tlifend lon?? 5, 1n which pivoted onthe pin 8 tlie ieteinei tle i, f being provided with lug *il l2 toengege we eno oi the liole ll. While the end liezwiei tlinn p e endtheieo from which the lugq lil pi r 9 the 'nulli and weight oi the endositioned on tlie opposite side of the the lug l2.

The tioned in the end il thence end and in 3 right po Weight of noenoted une;

ove? bale-nce the opposite in the position sliovvo ne tlneodbei is innig@ it usually is, and tine of the retainer oleo ie itii'ugnl foncewhen y fel" ing, es it olwojye is ivi i `eentiitiignl- Jnoie@ netin tinereenlt when' the tliien being undeie emted in lioifint positionn Fromtile i liet the thread lizn ie op i-nl ne Well as in veitienl ning itwill be understood that the it will always seoui'ely ifetein the eo l0on the thread vvliethei1 the letter be in vertical or llorzontal'posit." i sind that the revolving of the thread los due to theoperation thereof Will produc/e eentii'fugal foice in tlie 'end ld ei'eteiner is longer end' nl poeition as eliown it* l :i

constructed poe-i-` "egoing manner causes the 'a lill@ of theietofiiiiei end aid 1n retaining tli:

socket on the een t The socket l@ ie not usually o tigglit lit on thethief l l* i when the Wall l5 oi2 the socket benin uw bar, thus allowingsuilic-ient movement of the socket in the dleetion of the thneed bei toWitlidi'niv tlie lip l? of the lug l2` from inet the end 16 of thetlneed and the hele 11 so that thesoeket is easily and instantly removedfreni the thread bar when it is desired te remove it.

The socket retainer is of particular advantage for the retaining ofdrill sockets on the thread bar of coal drills and will saveconsiderable time in the changing ot' drills, the retainer beinginstantly operable and always dependable both in attaching and detaehinthe socket to the thread bar.

What I elaini as new, and desire to secure by Letters Patent, is

l. In drill socket retaining apparatus for coal drills, a thread bar, aretainer pivoted Within said thread bar, a retaining lug (in saidretainer and projecting from said thread bar, and a lip on 'said lug toleek a drill socket on said threadbar.

L); In drill socket retaining apparatus for coal vdrills', a thread bar,a retainer'extending longitudinally 0iE Said' thread bar and pivotedtherein, a retaining lug on 'one end et' said retainer and projectingfrem Said thread bar, the opposite end of' said retainer being heavierthan the end provided with said lug, and said heavier end of vsaidretainer inelining to the side of said thread bar opposite saidretaining lug.

JACOB C. MQLER.

